The Governor of Kenya Evelyn Baring declares a state of emergency and begins arresting hundreds of suspected leaders of the Mau Mau Uprising.

Evelyn Baring, 1st Baron Howick of Glendale, was Governor of Southern Rhodesia from 1942 to 1944, High Commissioner for Southern Africa from 1944 to 1951, and Governor of Kenya from 1952 to 1959. Baring played an integral role in the suppression of the Mau Mau rebellion. Together with Colonial Secretary Alan Lennox-Boyd, Baring played a significant role in the government's efforts to deal with the rebellion, and see Kenya through to independence. He was created Baron Howick of Glendale in 1960.

The Mau Mau rebellion (1952–1960), also known as the Mau Mau uprising, Mau Mau revolt, or Kenya Emergency, was a war in the British Kenya Colony (1920–1963) between the Kenya Land and Freedom Army (KLFA), also known as the Mau Mau, and the British authorities. Dominated by Kikuyu, Meru and Embu fighters, the KLFA also comprised units of Kamba and Maasai who fought against the European colonists in Kenya — the British Army, and the local Kenya Regiment.